Type-writing machine



(No Model.)

0. O. MALTBY. TYPE WRITINGMAOHINE.

No. 474,395. I Patented May 10, 1892.

WITNESSES; I 6? ea]. Jay

UNITED STATES PATENT OFFICE.

CLARK O. MALTBY, OF PHILADELPHIA, PENNSYLVANIA.

TYPE-WRITING MACHINE.

SPECIFICATION forming part Of Letters Patent NO. 474,395, dated May 10,1892.

Application filed May 2, 1591. Serial No. 391,345. (No model.)

To all whom it may concern;

Be it known that I, CLARK O. MALTBY, a citizen of the United States,residing in the city and county of Philadelphia, State of Pennsylvania,have invented a new and useful Improvement in 'lype-lVriting Machines,which improvement is fully set forth in the following specification andaccompanying drawings.

My invention relates to improvements in type-writing machines; and itconsists of mechanism, substantially as described, for operating thetypebars of a type-writing machine.

Figure l reprepresents a top or plan view of a portion of the frame of atype-writing machine embodying my invention. Fig. 2 represents aperspective view of the mechanism for operating the type-bar, with asectional view of a portion of the keyboard of the machine. Fig. 3represents a sectional view in elevation of a detail portion of thedevice.

- Similar letters of reference indicate corresponding parts in theseveral figures.

Referring to the drawings, A designates a portion of the frame of atype-writing machine, and B a bar carrying on or near one end a type 0.The barB is connected at one of its ends with an oscillating curvedshaft D, which extends diagonally or obliquely across the top of theframe A, so that said bar B extends therefrom on the inner side of theframe and at a right angle thereto. The shaft D is journaled in bearingsE and F, secured, respectively, at the inner and outer edges of theframe, both ends of the shaft being recessed to receive the bearings,one of which consists of a conically-pointed screw G, adapted to work inthe hearing or lug F. Projecting radially from the shaft D is a shortarm H, to the outer end of which is pivoted the downwardly-extendin grod J, connected at its lower end to the elbow-lever K.

A key L of the machine has a stem or downwardly-projecting rod M, whichworks in a slot in the keyboard N of the machine, pivotally connected toone limb of the elbow-lever P, the other limb of which is connected by ahorizontal rod Q with the elbow-lever K. It will be seen that thedownward movement of the key L, with its stem M, will oscillate thelever P, lowering the limbs thereof, thereby moving the rod Q and leverK, so as to depress or lower the rod J and the arm H, thus oscillatingthe shaft D, whereby the bar B, with the type C, is raised, the latterbeing brought in contact with the inking-ribbon of the machine formaking an impression on the paper. The conical screw-bearing G permitsthe adjustment of the same when required in case of the wearing of theWalls of the socket ends of the shaft D.

By having the shafts D curved a greater number of type-bars can beemployed at right angles to said shafts, and the limit of movement ofoscillation of each of the said shafts is also determined by the contactof the arch of the curve with the frame.

The construction herein described permits a uniform leverage and asimilar movement to each key of the machine.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A frame, a curved shaft having bearings on lugs at or near the innerand outer edges of said frame, a type-bar connected with the inner endof said shaft at a right angle thereto, a key, and mechanism connectedwith said key and to said shaft for oscillating the latter, said partsbeing combined substantiallv

